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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Pai amount CA 90723-3146 <br /> • O Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> IMethod 8260B <br /> Matrix Water <br /> Date Analyzed 3/25/05 <br />' Date Extracted 3/25/05 <br /> I Perimeters Conc u /L Spike Recove % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 44 45 50 88 90 70-130 20 2 <br /> I Benzene 47 47 50 94 94 70-130 20 0 <br /> Trichloroethene 48 49 50 96 98 70-130 20 2 <br /> Toluene 49 49 50 98 98 70-130 20 0 <br /> Chlorobenzene 46 48 50 92 96 70-130 20 4 <br /> rn, -X leases 92 1 98 100 92 98 70-130 20 6 <br />�• LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> Perimeters i Method Units Det. <br /> Blank Limit <br /> 1,1-Dichloroethene ND u /L 1 <br /> I Benzene ND u /L 05 <br /> Trichloroethene ND u /L 05 <br /> Toluene ND u /L 0 5 <br /> Chlorobenzene ND u /L 0 5 <br /> m, -X lenes ND ug/L 0 6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND ug/L 1 <br /> TAME ND u /L 1 <br /> 1,2-Dichloroethane ND a IL 0 5 <br /> EDB ND u /L 0 5 <br /> Eth €benzene ND u /L 0 5 <br /> o-X lene ND ug/L 0 6 <br /> Ethanol ND ug/L 50 <br /> Methanol ND u /L 1000 <br /> I <br /> i <br /> TOTAL] Y DLDIC NI ED €-O C US €-()M FR SATISFACTION <br />